diff --git a/pungi/phases/pkgset/pkgsets.py b/pungi/phases/pkgset/pkgsets.py
index 4cabe462..36b3fa7f 100644
--- a/pungi/phases/pkgset/pkgsets.py
+++ b/pungi/phases/pkgset/pkgsets.py
@@ -147,12 +147,9 @@ class PackageSetBase(kobo.log.LoggingBase):
 
         return self.rpms_by_arch
 
-    def merge(self, other, primary_arch, arch_list, unique_name=False):
+    def merge(self, other, primary_arch, arch_list):
         """
         Merge ``other`` package set into this instance.
-
-        With ``unique_name=True`` a package will be added only if there is not
-        a package with the same name already.
         """
         msg = "Merging package sets for %s: %s" % (primary_arch, arch_list)
         self.log_debug("[BEGIN] %s" % msg)
@@ -176,15 +173,11 @@ class PackageSetBase(kobo.log.LoggingBase):
         else:
             exclusivearch_list = None
         for arch in arch_list:
-            known_packages = set(pkg.name for pkg in self.rpms_by_arch.get(arch, []))
             self.rpms_by_arch.setdefault(arch, [])
             for i in other.rpms_by_arch.get(arch, []):
                 if i.file_path in self.file_cache:
                     # TODO: test if it really works
                     continue
-                if unique_name and i.name in known_packages:
-                    self.log_debug('Not merging in %r' % i)
-                    continue
                 if exclusivearch_list and arch == "noarch":
                     if is_excluded(i, exclusivearch_list, logger=self._logger):
                         continue
diff --git a/pungi/phases/pkgset/sources/source_koji.py b/pungi/phases/pkgset/sources/source_koji.py
index 534a77cd..ce1263b2 100644
--- a/pungi/phases/pkgset/sources/source_koji.py
+++ b/pungi/phases/pkgset/sources/source_koji.py
@@ -275,7 +275,6 @@ def populate_global_pkgset(compose, koji_wrapper, path_prefix, event_id):
             variant_tags[variant].extend(force_list(compose.conf["pkgset_koji_tag"]))
 
     # Add global tag(s) if supplied.
-    global_tags = []
     if 'pkgset_koji_tag' in compose.conf:
         if compose.conf["pkgset_koji_tag"] == "not-used":
             # The magic value is used for modular composes to avoid errors
@@ -284,8 +283,7 @@ def populate_global_pkgset(compose, koji_wrapper, path_prefix, event_id):
                                 'option is no longer required. Remove it from '
                                 'the configuration.')
         else:
-            global_tags = force_list(compose.conf["pkgset_koji_tag"])
-    compose_tags.extend(global_tags)
+            compose_tags.extend(force_list(compose.conf["pkgset_koji_tag"]))
 
     inherit = compose.conf["pkgset_koji_inherit"]
     global_pkgset_path = os.path.join(
@@ -329,8 +327,7 @@ def populate_global_pkgset(compose, koji_wrapper, path_prefix, event_id):
             if len(compose_tags) == 1:
                 global_pkgset = pkgset
             else:
-                global_pkgset.merge(pkgset, None, list(all_arches),
-                                    unique_name=compose_tag in global_tags)
+                global_pkgset.merge(pkgset, None, list(all_arches))
         with open(global_pkgset_path, 'wb') as f:
             data = pickle.dumps(global_pkgset)
             f.write(data)